CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Photoemission study of the electronic structure of valence band convergent SnSe
Wang, CW; Xia, YYY; Tian, Z; Jiang, J; Li, BH; Cui, ST; Yang, HF; Liang, AJ; Zhan, XY; Hong, GH; Liu, S; Chen, C; Wang, MX; Yang, LX; Liu, Z; Mi, QX; Li, G; Xue, JM; Liu, ZK; Chen, YL
2017
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume96Issue:16Pages:-
Subtype期刊论文
AbstractIV-VI semiconductor SnSe has been known as the material with record high thermoelectric performance. The multiple close-to-degenerate (or "convergent") valence bands in the electronic band structure has been one of the key factors contributing to the high power factor and thus figure of merit in the SnSe single crystal. To date, there have been primarily theoretical calculations of this particular electronic band structure. In this paper, however, using angle-resolved photoemission spectroscopy, we perform a systematic investigation of the electronic structure of SnSe. We directly observe three predicted hole bands with small energy differences between their band tops and relatively small in-plane effective masses, in good agreement with the ab initio calculations and critical for the enhancement of the Seebeck coefficient while keeping high electrical conductivity. Our results reveal the complete band structure of SnSe and help to provide a deeper understanding of the electronic origin of the excellent thermoelectric performances in SnSe.
KeywordPerformance Bulk Thermoelectrics Figure Merit Temperature Power Crystals
DOI10.1103/PhysRevB.96.165118
Indexed BySCI
WOS KeywordPERFORMANCE BULK THERMOELECTRICS ; FIGURE ; MERIT ; TEMPERATURE ; POWER ; CRYSTALS
Language英语
WOS IDWOS:000412700200002
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28770
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Wang, CW,Xia, YYY,Tian, Z,et al. Photoemission study of the electronic structure of valence band convergent SnSe[J]. PHYSICAL REVIEW B,2017,96(16):-.
APA Wang, CW.,Xia, YYY.,Tian, Z.,Jiang, J.,Li, BH.,...&Chen, YL.(2017).Photoemission study of the electronic structure of valence band convergent SnSe.PHYSICAL REVIEW B,96(16),-.
MLA Wang, CW,et al."Photoemission study of the electronic structure of valence band convergent SnSe".PHYSICAL REVIEW B 96.16(2017):-.
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